GIS VECTOR LAYER

Zoning
Slices

GIS layers that merge base and overlay districts into unique geometric combinations (“Slices”) to compute prevailing regulations — so you don’t have to.

Order Slices or Download Sample
Built for
Policy Research
Investigate trends around single-family prominence, missing middle housing, ADU adoption, and more.
Data Integration
Drop Zoning Slices directly into your data pipeline.
Geospatial Visualization
Display zoning regulatory outcomes as clean, non-overlapping polygons as you conduct internal analysis.
Scenario Planning
Model the impact of zoning proposals or decisions by comparing Slice outcomes before and after different scenarios.
Site Selection
Filter by the exact combination of zoning outcomes you need — permitted uses, minimum lot sizes, height caps — across any geography, at scale.
User Portals
Power address-level zoning lookups in your own product. Join Slices to parcel data to return the governing rules for any location.

Super-power
your analysis.

Zoning Slices are built using a custom flattening procedure that collapses every overlapping combination of base and overlay districts into individual, non-overlapping polygons, or  "Slices." Each Slice holds exactly one set of governing rules, so you never have to resolve overlapping layers yourself.

You choose the geographies and regulations you need. We deliver the GIS layers you can plug directly into your data pipeline.

All of the regulations provided in our Zoning Slices are defined in our data dictionary. Terms are available in our glossary and abbreviations guide.

Product Specifications

Coverage

160,000+ Slices

Available for purchase by jurisdiction or county on this website; contact us for purchase by CBSA, state, or region, or for national coverage.

Unit of Analysis

Zoning Slice

A unique geometric combination of base and overlay district(s).

What's Included

Customizable variables

Your choice of zoning outcome(s) covering residential and nonresidential use permissions, ADU allowances, building heights, parking mandates, and minimum lot sizes, as further defined in our Data Dictionary.

A license to use delivered information internally; for external or display purposes, contact us for a custom license.

Format

Analysis-ready GIS data

Geodatabase GeoJSON GeoPackage

Explore the data before you buy.

See for yourself

Download a sample Zoning Slices GeoJSON for Lafayette, Colorado  — and check out our data dictionary to see every regulation we collect, how we code them, and how they’re defined

Download Sample GeoJSON
DATA DICTIONARY
Order Now

Enter a geography to get started.

Zoning Slices are delivered in three formats (Geodatabase, GeoJSON, and GeoPackage) and are available for purchase below at the jurisdiction and county levels. For custom geographies, please contact us.

I want Zoning Slices for:
Choose Geography:

Type in the name of the jurisdiction (e.g., city, town, township, county) without typing in the state name. Then select the jurisdiction from the results.

Choose data variables:

Use the checkboxes to select each variable (or set of related variables sold together). All variables are further explained in our data dictionary. Each order includes all base variables listed in the data dictionary. Hover over any checkbox for details.

Our products

Not sure if Zoning Slices are the right fit?

We make five data products built for analyzing zoning, each designed for a different question, scale, and workflow. Explore them here.

Product What you get Best for Unit of analysis Format Pricing

Long live accessible zoning
for everyone.

By licensing our data,
you support the National Zoning Atlas.
Learn More.